I've only got my family and friends to reference, but it breaks about 70/30 with the MAGA conservatives on Android/iPhone and 80/20 for the liberals/leftists preferring iPhones.
And of my family at least, I suspect a big part of that is the conservatives are not the tech savvy ones who go into a store, knowing what kind of device they want; they just go into their cell phone provider and get whatever is least expensive for a smartphone
The post is up: https://www.iceblock.app/android
Turns out it's about the notifications not the location, though it still indirectly is about location since the notifications are geographically specific.